Temporal Correlation Between Urban Microclimate, Vector Mosquito Abundance, and Dengue Cases.

Area of Science:

• Epidemiology
• Vector-borne diseases
• Environmental health

Background:

• Dengue Hemorrhagic Fever (DHF) is a significant mosquito-borne viral disease.
• Previous studies linked general climate patterns to DHF incidence, but localized factors may be more influential.
• Urban and rural environmental variations can affect climate, vector populations, and disease transmission.

Purpose of the Study:

• To investigate the localized correlation between weather, Aedes aegypti abundance, and dengue incidence.
• To develop a precise, localized early warning system for DHF.
• To provide actionable insights for mosquito control programs.

Main Methods:

• A cohort study was conducted in 16 districts in Bandung, Indonesia, from January to December 2017.
• Daily weather data and adult female Ae. aegypti abundance were collected using local weather stations and modified light mosquito traps.
• A generalized linear model analyzed the impact of local weather and vector abundance on dengue cases.

Main Results:

• A significant non-linear correlation was found between mosquito abundance, maximum temperature, and dengue cases.
• Each additional adult Ae. aegypti mosquito increased dengue infection risk by 1.8%.
• A one-degree increase in maximum temperature decreased dengue infection risk by 17%.

Conclusions:

• Localized climate patterns and Aedes aegypti abundance are critical factors in dengue transmission.
• Findings offer specific insights to enhance current mosquito eradication strategies.
• The study supports the development of customized local early warning systems for DHF.